Kbudt4870a02 Parts

This bi-metal defrost thermostat controls the refrigerator's defrost cycle by opening or closing the circuit to the defrost heater, helping remove frost buildup and protect the heater from overheating. What it does:

• Opens the defrost heater circuit when the evaporator reaches the correct temperature to stop heating
• Closes the circuit at colder temperatures so the heater can run during a defrost cycle
• Helps prevent excessive frost buildup that can reduce cooling performance
• Commonly replaced when the defrost cycle fails to start or will not end properly

• One defrost bi-metal thermostat

• Disconnect power to the appliance before servicing to avoid electrical shock
• Located near the evaporator/heater assembly; access may require removing panels or the evaporator cover
• Handle carefully to avoid bending terminals or damaging the sensor element
• Test for continuity before replacement

A replacement door switch that senses when the appliance door is closed and allows the unit to operate. Restores normal safety interlock function so the appliance only runs with the door properly shut. What it does

• Detects door closure and completes the circuit to allow the appliance to start or run.
• Prevents operation when the door is open, helping keep users safe.
• Commonly linked to symptoms such as the appliance not starting, stopping mid-cycle, or controls not responding when the door is shut.
• Works as a direct electrical interface for the door latch or catch assembly.

• Disconnect power (unplug or shut off circuit breaker) before accessing the switch.
• Remove required access panels or the door inner panel; handle sharp edges and glass with care.
• Confirm wiring and connector orientation match the replacement; secure all fasteners and reassemble panels fully.

The Fan Motor is an OEM replacement part for Bosch refrigerators. It circulates cold air inside the insulated liner maintaining precise temperatures. Unhindered airflow locks in freshness. 

Causes of a bad fan motor involve enduring years of constant rotation which stresses motor windings and bearing surfaces beyond rated lifetimes. Vibration and ambient heat accelerate breakdowns.

Symptoms of a bad fan motor include:  

• Loss of desired cooling capacity as air fails to circulate    
• Temperature fluctuations that compromise perishables  
• Audible grinding or rattling from within the fridge's interior
• Failed fan blades detaching pose potential fridge hazards

This OEM Bosch part is also compatible with Thermador, Gaggenau, and some Kenmore models.